- form as an iframe: increased marginY
- fixed issue with page titles (old themes using wp_title hook)
- redirect on reinstall instead of showing a message (to avoid being able to re-save old settings)
- extracted "get subscription pages urls" from models\Subscriber
- added unit tests for subscription\url class (not working because of WP/Codeception issue)
- fixed position of checkbox in comment form
- refactored Subscriber::subscribe() method
- removed Form\Subscribe class in favor of Subscription\Comment (I'll create a similar class for Registration)
- added labels in Settings > Basics for Subscribe in comments & registration
- added method in Setting model to check whether signup confirmation is enabled